Mark wilks collet



(No Model.)

. M. w. OOLLET. LOOK FOR SHAFT DOORS 0F ELEVATORS. No.- 5'65,8 8Z.Patented Aug. 18, 1896.

Fig.1 I

(I In" 1 I i W PA 9 O O K@ OH i F I UNITED STATES- PATENT OFFICE.

MARK WILKS OOLLET, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY

MESNE ASSIGNMENTS, TO THE ELEVATOR SAFETY CONTROLLER COM- PANY, OF SAMEPLACE.

LOOK FOR SHAFT-DOORS OF ELEVATORS.

SPECIFICATION forming part of Letters Patent No. 565,882, dated August18, 1896.

Application filed December 20,1895. Serial No. 572,775. (No model.)

To all whom it may concern: by the dotted lines, and is held yieldinglyin Be it known that I, MARK W'ILKS OOLLET, its upright position by thepressure of the a citizen of the United States, and a resident spring F,which catches on projection E.

of the city and county of Philadelphia and The operation of my device isas follows:

State of Pennsylvania, have invented a new As the arm A is pressed backthe bolt O is 55 and useful Improvement in Locks for the moved out fromengagement with the shaft- Shaft-Doors of Elevators, of which thefollowdoor and held out of engagement until the ing is a clear andsufficient specification, refcar has moved away, as will be describedbeerence being had to the drawings annexed. low, and then is moved backinto engagement t The object of my invention is to unlock, auwhen thecar is moved away.

tomatically, the doors of elevators as the cage Fig. 4. shows a form ofdevice in which the comes opposite to them severally and to lock bolt Ois slid backward and forward by the the same again automatically as soonas the arm B engaging with the pin 0. This arm is cage has moved awayfrom in front of each attached to the spindle G, which turns inshaft-door. bearings on the bed-plate K. The arm A, 65

Figure 1 is a side elevation of my invented which is attached to thespindle G, comes into device in a form that is most convenient forcontact with the operating devices on the car overhanging elevator-doorswith the face and operates the device. The spring N acts plate removed.Fig. 2 is a side elevation of to keep the bolt 0 normally in engagementthe opposite side of some of the interior mechwith the door and theprojection or lug H 70 anism. Fig. 3 is a section on the line 00 y ofprevents apressure on the bolt 0' from bend- Fig. 1. Figs. 4 and 6 areviews of forms of ing the arm B. device applicable where the shaft-doorssit Fig. 6 shows a form of device which is simback slightly from theedge of the well; and pler than the above, The arm B, the arm Fig. 5 isa side elevation of part of acarriage, A, and the sleeve G are made inone piece 75 the lock, and shaft-door and adjacent strucand turn on thepin L. The end of the arm tures in cooperating positions B is shaped toengage the door, and is held Describing now in detail the best forms ofin engagement by the spring F, secured to andevice of whichIam atpresent aware, I make arm T, projecting from the sleeve G", and to thearm A, which comes into contact with the the bed-plate K. The block orlug H takes 80 devices moving with the car for moving it to the doorsthrust. release the catch engaging with the shaft- -The device foroperating the arm A is as door, in one piece with the spindle G, whichfollows: Upon the car is placed a double inturns in bearings L L, andmake also in one clined projection J, having the two inclines piece withthe spindle G the arm B, which 2 2. As the car rises the incline 2contacts 85 forms the means for connecting the arm A with the arm A, A,or A and pushes it back, with the devices engaging the door B. Thisholding the stop or bolt out of engagement part of the device consistsof the bolt 0, with the door until the car is past,and allowing which inFig. 1 is pivoted to the arm B by it tobe released graduallyby slidingoif the in- 40 the pin 0. In order to prevent the pressure cline 2. Ifthe car stops when the arm A is 90 arising from an attempt to press backthe pushed back, the door can be opened, and if door when the lock ison, I place, to strengthen the door be closed before the car moves itwill .the device, the two lugs H H, secured to the be locked closedautomatically so soon as the bed-plate K of the lock,on each side of thestop car moves away from the landing.

or bolt 0, to take the thrust from the back- Having now described myinventiomwhat 95 ward pressure of the door B. To allow the I claim, anddesire to secure by Letters Patdoor to be pushed closed should it beaccient, is-- dentallyleft open when the elevator is away, 1. Thecombination with the car, shaft,

I have pivoted the bolt 0 to the arm B, so that floor-door, of thelocking device consisting of it can turn on the latter into the positionshown the following parts, a bolt, engaging with said 10 door, lugs inengagement with the bolt, a pivoted lever consisting of an arm engagingwith said bolt, and a curved arm engaging with a projection upon thecar, and an inclined projection upon the car engaging with saidprojecting arm, substantially as described.

2. In a locking device for elevators, the combination of the arm A, thearm B and their spindle, the bolt 0 pivoted to the arm B the lugs H, II,the spring holding the arm B in position to bring the bolt G intoengagement with the floor-door, and the floor-door, all substantially asdescribed.

3. In a locking device for elevators, the floor-door, the arm A, thespindle G, the bed plate K, the lugs ILH, the bolt 0 pivoted to the armB, the spring holding the bolt in position to engage the door, thespring attached to and acting upon said bolt 0, and the arm B allsubstantially as described.

4. The combinatiomwith the car, shaft, and

the floor-door, of a projection upon said car provided with an inclinedsurface in either direction, and a locking device engaging with the doorconsisting of the following elements, a part engaging with said door anda pivoted arm for operating same, a movable arm connected operatively tosame and projecting into the path traversed by the inclined projectionupon the car, and a lug engaging with the part engaging with said doorand taking the thrust thereof when the same is endeavoi'ed to be pushedbackward, substantiallyas described.

In witness whereof I have hereunto set my hand in the presence of twosubscribing Witnesses.

MARK "WILKS OOLLET.

lVitnesses:

GEO. W. REED, AMos BONSALL.

